Research Article
Antibacterial Effect of Black Pepper Petroleum Ether Extract against Listeria monocytogenes and Salmonella typhimurium
Figure 3
The activities of PK and the contents of pyruvic acid in the culture solutions of L. monocytogenes (L) and S. typhimurium (S). The differences were analyzed by one-way ANOVA. The asterisks () indicate a significant difference compared with the control at .